

package com.xxxcompany.shop.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/TestServlet")
public class TestServlet extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("text/html;charset=utf-8");
		PrintWriter pw = resp.getWriter();
		
		HttpSession session = req.getSession();
		session.setMaxInactiveInterval(20);// 单位 秒 默认是30分钟 30*60
		session.setAttribute("username", "张三");
		
		ServletContext context = req.getServletContext();
		context.setAttribute("name", "zhangsan");
		context.setAttribute("name", "list");
		context.removeAttribute("name");
		
		
		pw.println("Hello world!");
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		doGet(req, resp);
	}
}